During the mid-1970s to late 1980s, the Australian armed forces during the post-Vietnam period weren't all that active, with only some token participation in pkos like the MFO in the Sinai and the 1979-80 Commonwealth monitoring force in Rhodesia/Zimbabwe, and with training missions in regional countries like PNG or the Solomons, and the deployment of 300 Army engineers to assist the UNTAG mission in Namibia in 1989 was the most prominent instance of our armed forces undertaking major overseas deployments. So, come up with scenarios between 1972 and before 1988 where the Australian armed forces become more heavily involved, whether in actual warfighting or other ops like peacekeeping or peace support.